Condensed, Consolidated Statements of Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Statement of Stockholders' Equity [Abstract]
Redeemable noncontrolling interests	$ 969	$ 1,300
Mandatorily redeemable noncontrolling interest	810	827
Other comprehensive income (loss) related to mandatorily redeemable noncontrolling interests	87	$ 168
Purchase of noncontrolling interests, portion attributable to redeemable noncontrolling interests	$ 1,185